﻿<%@ WebHandler Language="C#" Class="Uploadify" %>
/**
 * 新闻封面图片上传
 *
 */
using System;
using System.Collections;
using System.Web;
using System.IO;
using System.Globalization;
using Ajeelee.Core.Utils;

public class Uploadify : IHttpHandler
{
    private HttpContext context;

    public void ProcessRequest(HttpContext context)
    {
        //try
        //{
            String type = context.Request.QueryString["t"];
            type = !string.IsNullOrEmpty(type) ? type : "1";

            //String aspxUrl = context.Request.Path.Substring(0, context.Request.Path.LastIndexOf("/") + 1);
            String aspxUrl = "";

            //文件保存目录路径
            String savePath = "/upfile/";

            //文件保存目录URL
            String saveUrl = aspxUrl + "/upfile/";

            //定义允许上传的文件扩展名
            Hashtable extTable = new Hashtable();
            extTable.Add("image", "gif,jpg,jpeg,png,bmp");
            extTable.Add("flash", "swf,flv");
            extTable.Add("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
            extTable.Add("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2");

            //最大文件大小
            int maxSize = 1000000;
            this.context = context;

            HttpPostedFile imgFile = context.Request.Files["Filedata"];
            if (imgFile == null)
            {
                showError("请选择文件。");
            }

            String dirPath = context.Server.MapPath(savePath);
            if (!Directory.Exists(dirPath))
            {
                showError("上传目录不存在。");
            }

            String dirName = context.Request.QueryString["dir"];
            if (String.IsNullOrEmpty(dirName))
            {
                dirName = "image";
            }
            if (!extTable.ContainsKey(dirName))
            {
                showError("目录名不正确。");
            }

            String fileName = imgFile.FileName;
            String fileExt = Path.GetExtension(fileName).ToLower();

            if (imgFile.InputStream == null || imgFile.InputStream.Length > maxSize)
            {
                showError("上传文件大小超过限制。");
            }

            if (String.IsNullOrEmpty(fileExt) || Array.IndexOf(((String)extTable[dirName]).Split(','), fileExt.Substring(1).ToLower()) == -1)
            {
                showError("上传文件扩展名是不允许的扩展名。\n只允许" + ((String)extTable[dirName]) + "格式。");
            }

            //创建文件夹
            dirPath += dirName + "/";
            saveUrl += dirName + "/";
            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }
            String ymd = DateTime.Now.ToString("yyyyMMdd", DateTimeFormatInfo.InvariantInfo);
            dirPath += ymd + "/";
            saveUrl += ymd + "/";
            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }

            String newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", DateTimeFormatInfo.InvariantInfo) + fileExt;
            String filePath = dirPath + newFileName;

            string currPathUrl = saveUrl + newFileName;
            if (type == "1")
            {
                System.Drawing.Image originalImage = System.Drawing.Image.FromStream(imgFile.InputStream);
                BoCaiWeb.WebSite.Code.Utility.MakeThumbnail(originalImage, currPathUrl, 200, 200, BoCaiWeb.WebSite.Code.Utility.ThumMode.AutoZoomIn);
            }
            else if (type == "2")
            {
                imgFile.SaveAs(filePath);
            }

            Hashtable hash = new Hashtable();
            hash["error"] = 0;
            hash["url"] = currPathUrl;
            context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
            context.Response.Write(hash.SerializeJson());
            context.Response.End();
        //}
        //catch (Exception ex)
        //{
        //    Utility.WriteErrorLog(ex);
        //    showError("上传文件时出错！");
        //}
    }

    private void showError(string message)
    {
        Hashtable hash = new Hashtable();
        hash["error"] = 1;
        hash["message"] = message;
        context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
        context.Response.Write(hash.SerializeJson());
        context.Response.End();
    }

    public bool IsReusable
    {
        get
        {
            return true;
        }
    }
}
